Results 111 to 120 of about 58,260 (304)

Magnetospheric accretion on the fully convective classical T Tauri star DN Tau [PDF]

, 2013
We report here results of spectropolarimetric observations of the classical T Tauri star DN Tau carried out (at 2 epochs) with ESPaDOnS at the Canada-France-Hawaii Telescope within the ‘Magnetic Protostars and Planets’ programme.
J. Donati, S. Gregory, S. Alencar, G. Hussain, J. Bouvier, M. Jardine, F. Ménard, C. Dougados, M. Romanova, the MaPP collaboration   +9 more
semanticscholar   +1 more source

The Spectral Variability of the T Tauri Star DF Tauri [PDF]

The Astrophysical Journal, 1997
We analyze 117 echelle spectra of the T Tauri star DF Tau, concentrating on variations in the optical continuum veiling and the strong emission lines. Although this star was the inspiration for the original suggestion of magnetospheric accretion in T Tauri stars (TTSs), this hypothesis is only partially supported in our data. We find that variations in
Gibor Basri, Christopher M. Johns-Krull
openaire   +2 more sources

Masculinity Aloft and on the Ground: The Myth of Warrior Nation in Turkey's Cold War Cinema

Sociology Lens, EarlyView.
ABSTRACT This article explores the construction of militarized masculinity and nationalist myths in Turkish Cold War cinema of the 1960s through a comparative analysis of two films: On Korkusuz Adam (Ten Fearless Men, 1964) and Göklerdeki Sevgili (The Lover in the Skies, 1966). Produced and circulated in a period of political realignments as a response
Guldeniz Kibris
wiley   +1 more source

MBM 12: young protoplanetary discs at high galactic latitude

, 2009
(abridged) We present Spitzer infrared observations to constrain disc and dust evolution in young T Tauri stars in MBM 12, a star-forming cloud at high latitude with an age of 2 Myr and a distance of 275 pc.
A. Juhász, A. Sicilia-Aguilar, Adams, Apai, Artymowicz, Bouwman, Bouwman, Brandeker, Broeg, C. Chen, Carmona, Carpenter, Chauvin, Crovisier, D. Apai, Damjanov, Dorschner, Dullemond, Flaherty, Furlan, G. Meeus, Gail, Gail, Gustafsson, Haisch, Hearty, Henning, Higdon, Hogerheijde, Houck, I. Pascucci, Itoh, J. Bouwman, Jayawardhana, Jayawardhana, Jensen, Jäger, Keller, Kemper, Kessler-Silacci, Kessler-Silacci, Kurucz, Luhman, Luhman, Luhman, Magnani, Makovitz, Malfait, Min, Min, Muench, Mutschke, Pascucci, Petr, Pound, Ratzka, Rieke, Scholz, Scott, Servoin, Sicilia-Aguilar, Sicilia-Aguilar, Sicilia-Aguilar, Sicilia-Aguilar, Swain, Th. Henning, van Boekel, W. Lawson, Werner, White, Zimmermann   +70 more
core   +1 more source

The Development and Political Effects Of a Pan‐Arab Corporate Elite

Middle East Policy, EarlyView.
Abstract Gulf investment across the Arab states has skyrocketed since the 2000s. Such activity not only links corporate entities but also weaves new connections between business leaders. We take a birds‐eye view of the pan‐Arab corporate elite by analyzing the network of transnational interlocking directorships.
Hannes Baumann, Alice Hooper
wiley   +1 more source

Accretion-powered chromospheres in classical T Tauri stars [PDF]

, 2011
(Abridged) Optical spectra of classical T Tauri stars (cTTS) are rich in emission lines of low-excitation species that are composed of narrow and broad components, related to two regions with different kinematics, densities, and temperatures.
Aiad, Al-Naimi, Alencar, Appenzeller, Ardila, Argiroffi, Artemenko, Basri, Batalha, Berdyugina, Beristain, Beristain, Bertout, Bertout, Bertout, Bertout, Bouvier, Bouvier, Brickhouse, Calvet, Chavarria-K., Cram, Cram, Dall, Donati, Donati, Donati, Donati, Edwards, Edwards, F. M. Walter, Fang, Fischer, G. F. Gahm, Gahm, Gameiro, Grankin, Guenther, Gullbring, Gullbring, Güdel, H. C. Stempels, Hartigan, Hartigan, Hessman, Hussain, Johns, Johns-Krull, Kenyon, Krautter, Kravtsova, Kupka, Kwan, Lamzin, Lamzin, Long, Lorenzetti, Mohanty, Mundt, Muzerolle, Muzerolle, Orlando, P. P. Petrov, Percy, Petrov, Petrov, Petrov, Richter, Romanova, Romanova, Romanova, S. A. Artemenko, Smith, Smith, Stempels, Stempels, Valenti, Van Den Ancker   +77 more
core   +1 more source

Mapping the transcriptional landscape of algal resistance to viral infection reveals a core expression program

New Phytologist, EarlyView.
Summary Algal blooms and their demise by viruses drive global‐scale ecological processes in the ocean. These blooms form the foundation of marine food webs, regulate microbial communities, and shape biogeochemical cycles. Although algal populations are constantly infected by viruses, resistant subpopulations frequently emerge after the infection.
Talia S. Shaler, Amir Fromm, Daniella Schatz, Shifra Ben‐Dor, Ester Feldmesser, Assaf Vardi   +5 more
wiley   +1 more source

Fast transition between Classical and Weak lined T Tauri stars due to external UV dissipation

, 2007
The discovery of optical jets immersed in the strong UV radiation field of the Rosette Nebula sheds new light on, but meanwhile poses challenges to, the study of externally irradiated jets. The jet systems in the Rosette are found to have a high state of
Andrews, Bally, Bally, Bally, Dorland, Henney, J.Z. Li, Li, Li, Li, Looney, Massey, Panagia, Park, Reipurth, T.A. Rector, Whitworth, Zapatero Osorio   +17 more
core   +2 more sources

EVIDENCE FOR AN FU ORIONIS-LIKE OUTBURST FROM A CLASSICAL T TAURI STAR [PDF]

, 2010
We present pre- and post-outburst observations of the new FU Orionis-like young stellar object PTF 10qpf (also known as LkHα 188-G4 and HBC 722). Prior to this outburst, LkHα 188-G4 was classified as a classical T Tauri star (CTTS) on the basis of its ...
Adam A. Miller, L. Hillenbrand, K. Covey, D. Poznanski, J. Silverman, K. Io, W. Kleiser, B. Rojas-Ayala, P. Muirhead, S. Cenko, J. Bloom, M. Mansi, Kasliwal, A. Filippenko, N. Law, E. Ofek, R. Dekany, G. Rahmer, D. Hale, Roger M. Smith, R. Quimby, P. Nugent, J. Jacobsen, J. Zolkower, Viswa, Velur, R. Walters, J. Henning, K. Bui, D. McKenna, S. Kulkarni, C. Klein   +31 more
semanticscholar   +1 more source

Magnetospheric accretion in T Tauri stars

EAS Publications Series, 2003
This presentation focuses on the current status of and challenges related to the magnetospheric accretion process in young stars. It also highlights recent efforts to characterize structure and dynamics of the magnetic star-disk interaction region from an observational approach combining various techniques (e.g. spectropolarimetry, interferometry, high-
openaire   +2 more sources